minpkg/lib/min_lang.nim
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 |
import critbits, strutils, sequtils, json, parseopt, algorithm when defined(mini): import rdstdin, ../core/minilogger else: import os, logging, ../core/baseutils, ../packages/niftylogger, ../packages/nimline/nimline, ../packages/nim-sgregex/sgregex import ../core/env, ../core/meta, ../core/parser, ../core/value, ../core/interpreter, ../core/utils, ../core/scope proc lang_module*(i: In) = let def = i.scope const HELPFILE = "../../help.json".slurp let HELP = HELPFILE.parseJson when not defined(mini): def.symbol("from-json") do (i: In): let vals = i.expect("str") let s = vals[0] i.push i.fromJson(s.getString.parseJson) def.symbol("to-json") do (i: In): let vals = i.expect "a" let q = vals[0] i.push(($((i%q).pretty)).newVal) # Save/load symbols def.symbol("save-symbol") do (i: In) {.gcsafe.}: let vals = i.expect("'sym") let s = vals[0] let sym = s.getString let op = i.scope.getSymbol(sym) if op.kind == minProcOp: raiseInvalid("Symbol '$1' cannot be serialized." % sym) let json = MINSYMBOLS.readFile.parseJson json[sym] = i%op.val MINSYMBOLS.writeFile(json.pretty) def.symbol("load-symbol") do (i: In): let vals = i.expect("'sym") let s = vals[0] let sym = s.getString let json = MINSYMBOLS.readFile.parseJson if not json.hasKey(sym): raiseUndefined("Symbol '$1' not found." % sym) let val = i.fromJson(json[sym]) i.scope.symbols[sym] = MinOperator(kind: minValOp, val: val, quotation: true) def.symbol("saved-symbols") do (i: In): var q = newSeq[MinValue](0) let json = MINSYMBOLS.readFile.parseJson for k,v in json.pairs: q.add k.newVal i.push q.newVal def.symbol("remove-symbol") do (i: In): let vals = i.expect("'sym") let s = vals[0] let sym = s.getString var json = MINSYMBOLS.readFile.parseJson if not json.hasKey(sym): raiseUndefined("Symbol '$1' not found." % sym) json.delete(sym) MINSYMBOLS.writeFile(json.pretty) def.symbol("load") do (i: In): let vals = i.expect("'sym") let s = vals[0] var file = s.getString if not file.endsWith(".min"): file = file & ".min" info("[load] File: ", file) let f = simplifyPath(i.filename, file) if MINCOMPILED and COMPILEDMINFILES.hasKey(f): var i2 = i.copy(f) i2.withScope(): COMPILEDMINFILES[f](i2) i = i2.copy(i.filename) return else: if not f.fileExists: raiseInvalid("File '$1' does not exist." % file) i.load f def.symbol("require") do (i: In): let vals = i.expect("'sym") let s = vals[0] var file = s.getString if not file.endsWith(".min"): file = file & ".min" info("[require] File: ", file) let f = simplifyPath(i.filename, file) if MINCOMPILED and COMPILEDMINFILES.hasKey(f): var i2 = i.copy(f) i2.withScope(): var mdl: MinValue if not CACHEDMODULES.hasKey(f): COMPILEDMINFILES[f](i2) CACHEDMODULES[f] = newDict(i2.scope) CACHEDMODULES[f].objType = "module" mdl = CACHEDMODULES[f] for key, value in i2.scope.symbols.pairs: mdl.scope.symbols[key] = value i.push(mdl) else: if not f.fileExists: raiseInvalid("File '$1' does not exist." % file) i.push i.require(f) def.symbol("raw-args") do (i: In): var args = newSeq[MinValue](0) for par in commandLineParams(): args.add par.newVal i.push args.newVal def.symbol("with") do (i: In): let vals = i.expect("dict", "quot") var qscope = vals[0] var qprog = vals[1] i.withDictScope(qscope.scope): for v in qprog.qVal: i.push v def.symbol("publish") do (i: In): let vals = i.expect("dict", "'sym") let qscope = vals[0] let str = vals[1] let sym = str.getString if qscope.scope.symbols.hasKey(sym) and qscope.scope.symbols[sym].sealed: raiseUndefined("Attempting to redefine sealed symbol '$1'" % [sym]) let scope = i.scope info("[publish] Symbol: $2" % [sym]) let op = proc(i: In) {.closure.} = let origscope = i.scope i.scope = scope i.evaluating = true i.pushSym sym i.evaluating = false i.scope = origscope qscope.scope.symbols[sym] = MinOperator(kind: minProcOp, prc: op) ### End of symbols not present in minimin def.symbol("operator") do (i: In): let vals = i.expect("quot"); let q = vals[0] if q.qVal.len != 4: raiseInvalid("Invalid operator definition") let tv = q.qVal[0] let t = tv.symVal let nv = q.qVal[1] if not tv.isSymbol or (not ["symbol", "sigil", "typeclass", "constructor"].contains(t)): raiseInvalid("Incorrect operator type specified (it must be 'symbol', 'sigil', 'constructor', or 'typeclass' - found '$#')" % tv.symVal) if not nv.isSymbol: raiseInvalid("Operator name must be a symbol") var n = nv.symVal when not defined(mini): if not n.match(USER_SYMBOL_REGEX): raiseInvalid("Operator name must not contain invalid characters") if t == "typeclass": n = "typeclass:"&n # Validate signature let sv = q.qVal[2] if not sv.isQuotation: raiseInvalid("Signature must be a quotation") elif sv.qVal.len == 0: raiseInvalid("No signature specified") elif sv.qVal.len == 1 and sv.qVal[0] != "==>".newSym: raiseInvalid("Invalid signature") elif sv.qVal.len mod 2 == 0: raiseInvalid("Invalid signature") var c = 0 # Process signature let docSig = $sv var inExpects= newSeq[string](0) var inVars = newSeq[string](0) var outExpects= newSeq[string](0) var outVars = newSeq[string](0) var rawOutVars = newSeq[string](0) var generics: CritBitTree[string] var origGenerics: CritBitTree[string] var o = false for vv in sv.qVal: if not vv.isSymbol and not vv.isQuotation: raiseInvalid("Signature must be a quotation of symbols/quotations") var v: string var check = c mod 2 == 0 if o: check = c mod 2 != 0 if vv.isQuotation: if vv.qVal.len != 2 or not vv.qVal[0].isSymbol or not vv.qVal[1].isSymbol: raiseInvalid("Generic quotation must contain exactly two symbols") let t = vv.qVal[0].getString let g = vv.qVal[1].getString if not i.validType(t): raiseInvalid("Invalid type '$#' in generic in signature at position $#" % [$t, $(c+1)]) if g[0] != ':' and g[0] != '^': raiseInvalid("No mapping symbol specified in generic in signature at position $#" % $(c+1)) v = g[1..g.len-1] generics[v] = t else: v = vv.symVal if check: if v == "==>": o = true elif not i.validType(v) and not generics.hasKey(v): raiseInvalid("Invalid type '$#' specified in signature at position $#" % [v, $(c+1)]) else: if o: if tv.symVal == "typeclass" and (outExpects.len > 0 or v != "bool"): raiseInvalid("typeclasses can only have one boolean output value") if tv.symVal == "constructor" and (outExpects.len > 0 or v != "dict"): raiseInvalid("constructors can only have one dictionary output value") outExpects.add v else: if tv.symVal == "typeclass" and inExpects.len > 0: raiseInvalid("typeclasses can only have one input value") inExpects.add v else: if v[0] != ':' and v[0] != '^': raiseInvalid("No capturing symbol specified in signature at position $#" % $(c+1)) else: if o: if v[0] == '^' and outExpects[outExpects.len-1] != "quot": raiseInvalid("Only quotations can be captured to a lambda, found $# instead at position $#" % [outExpects[outExpects.len-1], $(c+1)]) rawOutVars.add v outVars.add v[1..v.len-1] else: if v[0] == '^': raiseInvalid("A lambda capturing symbol was specified in signature at position $#. Lambda capturing symbols are only allowed for output values" % $(c+1)) inVars.add v[1..v.len-1] c.inc() if not o: raiseInvalid("No output specified in signature") origGenerics = deepCopy(generics) # Process body var bv = q.qVal[3] if not bv.isQuotation: raiseInvalid("Body must be a quotation") inExpects.reverse inVars.reverse var p: MinOperatorProc = proc (i: In) = var inVals: seq[MinValue] try: inVals = i.expect(inExpects, generics) except: generics = origGenerics raise i.withScope(): # Inject variables for mapped inputs for k in 0..inVars.len-1: var iv = inVals[k] if iv.isQuotation: iv = @[iv].newVal i.scope.symbols[inVars[k]] = MinOperator(kind: minValOp, sealed: false, val: iv, quotation: inVals[k].isQuotation) # Inject variables for mapped outputs for k in 0..outVars.len-1: i.scope.symbols[outVars[k]] = MinOperator(kind: minValOp, sealed: false, val: newNull(), quotation: false) # Actually execute the body of the operator var endSnapshot: seq[MinValue] var snapShot: seq[MinValue] try: snapshot = deepCopy(i.stack) i.dequote bv endSnapshot = i.stack let d= snapshot.diff(endSnapshot) if d.len > 0 : raiseInvalid("Operator '$#' is polluting the stack -- $#" % [n, $d.newVal]) except MinReturnException: discard # Validate output for k in 0..outVars.len-1: var x = i.scope.symbols[outVars[k]].val if rawOutVars[k][0] == ':': x = x.qVal[0] if t == "constructor": x.objType = n let o = outExpects[k] var r = false; if o.contains("|"): let types = o.split("|") for ut in types: if i.validate(x, ut, generics): r = true break else: r = i.validate(x, o, generics) if not r: var tp = o if generics.hasKey(o): tp = generics[o] generics = origGenerics raiseInvalid("Invalid value for output symbol '$#'. Expected $#, found $#" % [outVars[k], tp, $x]) # Push output on stack i.pushSym outVars[k] generics = origGenerics # Define symbol/sigil var doc = newJObject() doc["name"] = %n doc["kind"] = %t doc["signature"] = %docSig doc["description"] = %i.currSym.docComment.strip if ["symbol", "typeclass", "constructor"].contains(t): if i.scope.symbols.hasKey(n) and i.scope.symbols[n].sealed: raiseUndefined("Attempting to redefine sealed symbol '$1'" % [n]) i.scope.symbols[n] = MinOperator(kind: minProcOp, prc: p, sealed: false, doc: doc) else: if i.scope.sigils.hasKey(n) and i.scope.sigils[n].sealed: raiseUndefined("Attempting to redefine sealed sigil '$1'" % [n]) i.scope.sigils[n] = MinOperator(kind: minProcOp, prc: p, sealed: true, doc: doc) def.symbol("expect-empty-stack") do (i: In): let l = i.stack.len if l != 0: raiseInvalid("Expected empty stack, found $# elements instead" % $l) def.symbol("exit") do (i: In): let vals = i.expect("int") quit(vals[0].intVal.int) def.symbol("puts") do (i: In): let a = i.peek echo $$a def.symbol("gets") do (i: In) {.gcsafe.}: when defined(mini): i.push readLineFromStdin("").newVal else: var ed = initEditor() i.push ed.readLine().newVal def.symbol("apply") do (i: In): let vals = i.expect("quot") var prog = vals[0] i.apply prog def.symbol("symbols") do (i: In): var q = newSeq[MinValue](0) var scope = i.scope while not scope.isNil: for s in scope.symbols.keys: q.add s.newVal scope = scope.parent i.push q.newVal def.symbol("defined-symbol?") do (i: In): let vals = i.expect("'sym") i.push(i.scope.hasSymbol(vals[0].getString).newVal) def.symbol("defined-sigil?") do (i: In): let vals = i.expect("'sym") i.push(i.scope.hasSigil(vals[0].getString).newVal) def.symbol("sealed-symbol?") do (i: In): let vals = i.expect("'sym") i.push i.scope.getSymbol(vals[0].getString).sealed.newVal def.symbol("sealed-sigil?") do (i: In): let vals = i.expect("'sym") i.push i.scope.getSigil(vals[0].getString).sealed.newVal def.symbol("sigils") do (i: In): var q = newSeq[MinValue](0) var scope = i.scope while not scope.isNil: for s in scope.sigils.keys: q.add s.newVal scope = scope.parent i.push q.newVal def.symbol("scope-symbols") do (i: In): let vals = i.expect("dict") let m = vals[0] var q = newSeq[MinValue](0) for s in m.scope.symbols.keys: q.add s.newVal i.push q.newVal def.symbol("scope-sigils") do (i: In): let vals = i.expect("dict") let m = vals[0] var q = newSeq[MinValue](0) for s in m.scope.sigils.keys: q.add s.newVal i.push q.newVal def.symbol("lite?") do (i: In): i.push defined(lite).newVal def.symbol("mini?") do (i: In): i.push defined(mini).newVal def.symbol("from-yaml") do (i: In): let vals = i.expect("str") let s = vals[0] try: var dict = newDict(i.scope) let lines = s.strVal.split("\n") for line in lines: let pair = line.split(":") if pair.len == 1 and pair[0].len == 0: continue i.dset(dict, pair[0].strip, pair[1].strip.newVal) i.push(dict) except: raiseInvalid("Invalid/unsupported YAML object (only dictionaries with string values are supported)") def.symbol("to-yaml") do (i: In): let vals = i.expect "a" let a = vals[0] let err = "YAML conversion is only supported from dictionaries with string values" if a.kind != minDictionary: raiseInvalid(err) var yaml = "" try: for key in i.keys(a).qVal: let value = i.dget(a, key) if value.kind != minString: raiseInvalid(err) yaml &= "$1: $2\n" % [key.strVal, value.strVal] i.push(yaml.strip.newVal) except: raiseInvalid(err) def.symbol("loglevel") do (i: In): let vals = i.expect("'sym") let s = vals[0] var str = s.getString when defined(mini): echo "Log level: ", minilogger.setLogLevel(str) else: echo "Log level: ", niftylogger.setLogLevel(str) def.symbol("loglevel?") do (i: In): when defined(mini): i.push minilogger.getLogLevel().newVal else: i.push niftylogger.getLogLevel().newVal # Language constructs def.symbol("define") do (i: In): let vals = i.expect("'sym", "a") let sym = vals[0] var q1 = vals[1] # existing (auto-quoted) var symbol: string var isQuot = q1.isQuotation q1 = @[q1].newVal symbol = sym.getString when not defined(mini): if not symbol.match USER_SYMBOL_REGEX: raiseInvalid("Symbol identifier '$1' contains invalid characters." % symbol) info "[define] $1 = $2" % [symbol, $q1] if i.scope.symbols.hasKey(symbol) and i.scope.symbols[symbol].sealed: raiseUndefined("Attempting to redefine sealed symbol '$1'" % [symbol]) i.scope.symbols[symbol] = MinOperator(kind: minValOp, val: q1, sealed: false, quotation: isQuot) def.symbol("lambda") do (i: In): let vals = i.expect("'sym", "quot") let sym = vals[0] var q1 = vals[1] var symbol: string symbol = sym.getString when not defined(mini): if not symbol.match USER_SYMBOL_REGEX: raiseInvalid("Symbol identifier '$1' contains invalid characters." % symbol) info "[lambd] $1 = $2" % [symbol, $q1] if i.scope.symbols.hasKey(symbol) and i.scope.symbols[symbol].sealed: raiseUndefined("Attempting to redefine sealed symbol '$1'" % [symbol]) i.scope.symbols[symbol] = MinOperator(kind: minValOp, val: q1, sealed: false, quotation: true) def.symbol("bind") do (i: In): let vals = i.expect("'sym", "a") let sym = vals[0] var q1 = vals[1] # existing (auto-quoted) var symbol: string var isQuot = q1.isQuotation q1 = @[q1].newVal symbol = sym.getString info "[bind] $1 = $2" % [symbol, $q1] let res = i.scope.setSymbol(symbol, MinOperator(kind: minValOp, val: q1, quotation: isQuot)) if not res: raiseUndefined("Attempting to bind undefined symbol: " & symbol) def.symbol("lambda-bind") do (i: In): let vals = i.expect("'sym", "quot") let sym = vals[0] var q1 = vals[1] var symbol: string symbol = sym.getString info "[lambda-bind] $1 = $2" % [symbol, $q1] let res = i.scope.setSymbol(symbol, MinOperator(kind: minValOp, val: q1, quotation: true)) if not res: raiseUndefined("Attempting to lambda-bind undefined symbol: " & symbol) def.symbol("delete-symbol") do (i: In): let vals = i.expect("'sym") let sym = vals[0] let res = i.scope.delSymbol(sym.getString) if not res: raiseUndefined("Attempting to delete undefined symbol: " & sym.getString) def.symbol("delete-sigil") do (i: In): let vals = i.expect("'sym") let sym = vals[0] let res = i.scope.delSigil(sym.getString) if not res: raiseUndefined("Attempting to delete undefined sigil: " & sym.getString) def.symbol("scope") do (i: In): var dict = newDict(i.scope.parent) dict.objType = "module" dict.filename = i.filename dict.scope = i.scope i.push dict def.symbol("parent-scope") do (i: In): let vals = i.expect("dict") let d = vals[0] if d.scope.parent.isNil: i.push newNull() return var dict = newDict(d.scope.parent) dict.objType = "module" dict.filename = i.filename dict.scope = d.scope.parent i.push dict def.symbol("type") do (i: In): let vals = i.expect("a") i.push vals[0].typeName.newVal def.symbol("symbol-help") do (i: In): let vals = i.expect("'sym") let s = vals[0].getString if i.scope.hasSymbol(s): let sym = i.scope.getSymbol(s) if not sym.doc.isNil and sym.doc.kind == JObject: var doc = i.fromJson(sym.doc) doc.objType = "help" i.push doc return elif HELP["operators"].hasKey(s): var doc = i.fromJson(HELP["operators"][s]) doc.objType = "help" i.push doc return i.push nil.newVal def.symbol("sigil-help") do (i: In): let vals = i.expect("'sym") let s = vals[0].getString if i.scope.hasSigil(s): let sym = i.scope.getSigil(s) if not sym.doc.isNil and sym.doc.kind == JObject: var doc = i.fromJson(sym.doc) doc.objType = "help" i.push doc return elif HELP["operators"].hasKey(s): var doc =i.fromJson(HELP["operators"][s]) doc.objType = "help" i.push doc return i.push nil.newVal def.symbol("help") do (i: In): if i.stack.len == 0 or not i.stack[i.stack.len-1].isStringLike: warn "Specify a quoted symbol or string to show its help documentation, e.g. 'puts help" return let s = i.pop.getString var found = false var foundDoc = false let displayDoc = proc (j: JsonNode) = echo "=== $# [$#]" % [j["name"].getStr, j["kind"].getStr] if j.hasKey("signature"): echo j["signature"].getStr if j.hasKey("description"): let desc = j["description"].getStr if desc.len != 0: let lines = desc.split("\n") echo "" for l in lines: echo " " & l echo "===" if i.scope.hasSymbol(s): found = true let sym = i.scope.getSymbol(s) if not sym.doc.isNil and sym.doc.kind == JObject: foundDoc = true displayDoc(sym.doc) elif HELP["operators"].hasKey(s): foundDoc = true displayDoc HELP["operators"][s] if i.scope.hasSigil(s): found = true let sym = i.scope.getSigil(s) if not sym.doc.isNil and sym.doc.kind == JObject: foundDoc = true displayDoc(sym.doc) elif HELP["sigils"].hasKey(s): foundDoc = true displayDoc HELP["sigils"][s] if not found: warn "Undefined symbol or sigil: $#" % s elif not foundDoc: warn "No documentation found for symbol or sigil: $#" % s def.symbol("import") do (i: In): var vals = i.expect("'sym") let rawName = vals[0] var name: string name = rawName.getString var op = i.scope.getSymbol(name) i.apply(op) vals = i.expect("dict:module") let mdl = vals[0] info("[import] Importing: $1 ($2 symbols, $3 sigils)" % [name, $mdl.scope.symbols.len, $mdl.scope.sigils.len]) for sym, val in mdl.scope.symbols.pairs: if i.scope.symbols.hasKey(sym) and i.scope.symbols[sym].sealed: raiseUndefined("Attempting to redefine sealed symbol '$1'" % [sym]) i.debug "[import] $1" % [sym] i.scope.symbols[sym] = val for sig, val in mdl.scope.sigils.pairs: if i.scope.sigils.hasKey(sig) and i.scope.sigils[sig].sealed: raiseUndefined("Attempting to redefine sealed sigil '$1'" % [sig]) i.debug "[import] $1" % [sig] i.scope.sigils[sig] = val def.symbol("eval") do (i: In): let vals = i.expect("str") let s = vals[0] i.eval s.strVal def.symbol("quit") do (i: In): i.push 0.newVal i.pushSym "exit" def.symbol("parse") do (i: In): let vals = i.expect("str") let s = vals[0] i.push i.parse s.strVal def.symbol("source") do (i: In): let vals = i.expect("'sym") let s = vals[0] let str = s.getString let sym = i.scope.getSymbol(str) if sym.kind == minValOp: i.push sym.val else: raiseInvalid("No source available for native symbol '$1'." % str) def.symbol("invoke") do (i: In): let vals = i.expect("'sym") let s = vals[0].getString let parts = s.split("/") if parts.len < 2: raiseInvalid("Dictionary identifier not specified") i.pushSym parts[0] for p in 0..parts.len-2: let vals = i.expect("dict") let mdl = vals[0] let symId = parts[p+1] let origScope = i.scope i.scope = mdl.scope i.scope.parent = origScope let sym = i.scope.getSymbol(symId) i.apply(sym) i.scope = origScope def.symbol("raise") do (i: In): let vals = i.expect("dict") let err = vals[0] if err.dhas("error".newVal) and err.dhas("message".newVal): raiseRuntime("($1) $2" % [i.dget(err, "error".newVal).getString, i.dget(err, "message").getString], err) else: raiseInvalid("Invalid error dictionary") def.symbol("format-error") do (i: In): let vals = i.expect("dict:error") let err = vals[0] if err.dhas("error".newVal) and err.dhas("message".newVal): var msg: string var list = newSeq[MinValue]() list.add i.dget(err, "message") if err.dhas("symbol"): list.add i.dget(err, "symbol") if err.dhas("filename"): list.add i.dget(err, "filename") if err.dhas("line"): list.add i.dget(err, "line") if err.dhas("column"): list.add i.dget(err, "column") if list.len <= 3: msg = "$1" % $$list[0] else: msg = "$3($4,$5) `$2`: $1" % [$$list[0], $$list[1], $$list[2], $$list[3], $$list[4]] i.push msg.newVal else: raiseInvalid("Invalid error dictionary") def.symbol("try") do (i: In): let vals = i.expect("quot") let prog = vals[0] if prog.qVal.len == 0: raiseInvalid("Quotation must contain at least one element") var code = prog.qVal[0] var final, catch: MinValue var hasFinally = false var hasCatch = false if prog.qVal.len > 1: catch = prog.qVal[1] hasCatch = true if prog.qVal.len > 2: final = prog.qVal[2] hasFinally = true if (not code.isQuotation) or (hasCatch and not catch.isQuotation) or (hasFinally and not final.isQuotation): raiseInvalid("Quotation must contain at least one quotation") try: i.dequote(code) except MinRuntimeError: if not hasCatch: return let e = (MinRuntimeError)getCurrentException() i.push e.data i.dequote(catch) except: if not hasCatch: return let e = getCurrentException() var res = newDict(i.scope) var err = $e.name let col = err.find(":") if col >= 0: err = err[0..col-1] res.objType = "error" i.dset(res, "error", err.newVal) i.dset(res, "message", e.msg.newVal) if i.currSym.getString != "": # TODO investigate when this happens i.dset(res, "symbol", i.currSym) i.dset(res, "filename", i.currSym.filename.newVal) i.dset(res, "line", i.currSym.line.newVal) i.dset(res, "column", i.currSym.column.newVal) i.push res i.dequote(catch) finally: if hasFinally: i.dequote(final) def.symbol("quote") do (i: In): let vals = i.expect("a") let a = vals[0] i.push @[a].newVal def.symbol("dequote") do (i: In): let vals = i.expect("quot") var q = vals[0] i.dequote(q) def.symbol("tap") do (i: In): let vals = i.expect("quot", "a") let programs = vals[0] var a = vals[1] for program in programs.qVal: var p = program i.push(a) i.dequote(p) a = i.pop i.push(a) # Conditionals def.symbol("if") do (i: In): let vals = i.expect("quot", "quot", "quot") var fpath = vals[0] var tpath = vals[1] var check = vals[2] var stack = i.stack i.dequote(check) let res = i.pop i.stack = stack if not res.isBool: raiseInvalid("Result of check is not a boolean value") if res.boolVal == true: i.dequote(tpath) else: i.dequote(fpath) def.symbol("when") do (i: In): let vals = i.expect("quot", "quot") var tpath = vals[0] var check = vals[1] var stack = i.stack i.dequote(check) let res = i.pop i.stack = stack if not res.isBool: raiseInvalid("Result of check is not a boolean value") if res.boolVal == true: i.dequote(tpath) def.symbol("unless") do (i: In): let vals = i.expect("quot", "quot") var tpath = vals[0] var check = vals[1] var stack = i.stack i.dequote(check) let res = i.pop i.stack = stack if not res.isBool: raiseInvalid("Result of check is not a boolean value") if res.boolVal == false: i.dequote(tpath) # 4 ( # ((> 3) ("Greater than 3" put!)) # ((< 3) ("Smaller than 3" put!)) # ((true) ("Exactly 3" put!)) # ) case def.symbol("case") do (i: In): let vals = i.expect("quot") var cases = vals[0] if cases.qVal.len == 0: raiseInvalid("Empty case operator") var k = 0 let stack = i.stack for c in cases.qVal: i.stack = stack if not c.isQuotation: raiseInvalid("A quotation of quotations is required") k.inc if c.qVal.len != 2 or not c.qVal[0].isQuotation or not c.qVal[1].isQuotation: raiseInvalid("Inner quotations in case operator must contain two quotations") var q = c.qVal[0] i.dequote(q) let res = i.pop if not res.isBool(): raiseInvalid("Result of case #$1 is not a boolean value" % $k) if res.boolVal == true: var t = c.qVal[1] i.dequote(t) break # Loops def.symbol("foreach") do (i: In): let vals = i.expect("quot", "quot") var prog = vals[0] var list = vals[1] for litem in list.qVal: i.push litem i.dequote(prog) def.symbol("times") do (i: In): let vals = i.expect("int", "quot") var t = vals[0] var prog = vals[1] if t.intVal < 1: raiseInvalid("A non-zero natural number is required") for c in 1..t.intVal: i.dequote(prog) def.symbol("while") do (i: In): let vals = i.expect("quot", "quot") var d = vals[0] var b = vals[1] i.dequote(b) var check = i.pop while check.boolVal == true: i.dequote(d) i.dequote(b) check = i.pop # Other def.symbol("linrec") do (i: In): let vals = i.expect("quot", "quot", "quot", "quot") var r2 = vals[0] var r1 = vals[1] var t = vals[2] var p = vals[3] proc linrec(i: In, p, t, r1, r2: var MinValue) = i.dequote(p) var check = i.pop if check.isBool and check.boolVal == true: i.dequote(t) else: i.dequote(r1) i.linrec(p, t, r1, r2) i.dequote(r2) i.linrec(p, t, r1, r2) def.symbol("version") do (i: In): i.push pkgVersion.newVal def.symbol("seal-symbol") do (i: In): let vals = i.expect("'sym") let sym = vals[0].getString var s = i.scope.getSymbol(sym) s.sealed = true i.scope.setSymbol(sym, s, true) def.symbol("seal-sigil") do (i: In): let vals = i.expect("'sym") let sym = vals[0].getString var s = i.scope.getSigil(sym) s.sealed = true i.scope.setSigil(sym, s, true) def.symbol("unseal-symbol") do (i: In): let vals = i.expect("'sym") let sym = vals[0].getString var s = i.scope.getSymbol(sym) s.sealed = false i.scope.setSymbol(sym, s, true) def.symbol("unseal-sigil") do (i: In): let vals = i.expect("'sym") let sym = vals[0].getString var s = i.scope.getSigil(sym) when not defined(mini): if not sym.match USER_SYMBOL_REGEX: # Prevent accidentally unsealing system sigils # Not that they can redefined, but still raiseInvalid("Attempting to unseal system sigil: " & sym) s.sealed = false i.scope.setSigil(sym, s, true) def.symbol("args") do (i: In): var args = newSeq[MinValue](0) for kind, key, val in getopt(): case kind: of cmdArgument: args.add key.newVal else: discard i.push args.newVal def.symbol("opts") do (i: In): var opts = newDict(i.scope) for kind, key, val in getopt(): case kind: of cmdLongOption, cmdShortOption: if val == "": opts = i.dset(opts, key.newVal, true.newVal) else: opts = i.dset(opts, key.newVal, val.newVal) else: discard i.push opts def.symbol("expect") do (i: In): var q: MinValue i.reqQuotationOfSymbols q i.push(i.expect(q.qVal.mapIt(it.getString())).reversed.newVal) def.symbol("infix-dequote") do (i: In): let vals = i.expect("quot") let q = vals[0] proc infix(i: In, q: MinValue): MinValue = var ops = newSeq[MinValue](0) var res = newSeq[MinValue](0).newVal for x in q.qVal: if x.isSymbol: ops.add x else: if x.isQuotation: res.qVal.add i.infix(x) else: res.qVal.add x if ops.len > 0: res.qVal.add ops.pop i.dequote(res) res = newSeq[MinValue](0).newVal return i.pop i.push i.infix(q) def.symbol("prefix-dequote") do (i: In): let vals = i.expect("quot") var q = vals[0] q.qVal.reverse i.dequote(q) def.symbol("compiled?") do (i: In): i.push MINCOMPILED.newVal def.symbol("line-info") do (i: In): var d = newDict(i.scope) i.dset(d, "filename", i.currSym.filename.newVal) i.dset(d, "line", i.currSym.line.newVal) i.dset(d, "column", i.currSym.column.newVal) i.push d # Converters def.symbol("string") do (i: In): let s = i.pop i.push(($$s).newVal) def.symbol("boolean") do (i: In): let v = i.pop let strcheck = (v.isString and (v.getString == "false" or v.getString == "")) let intcheck = v.isInt and v.intVal == 0 let floatcheck = v.isFloat and v.floatVal == 0 let boolcheck = v.isBool and v.boolVal == false let quotcheck = v.isQuotation and v.qVal.len == 0 if v.isNull or strcheck or intcheck or floatcheck or boolcheck or quotcheck: i.push false.newVal else: i.push true.newVal def.symbol("integer") do (i: In): let s = i.pop if s.isString: i.push s.getString.parseInt.newVal elif s.isNull: i.push 0.int.newVal elif s.isFloat: i.push s.floatVal.int.newVal elif s.isInt: i.push s elif s.isBool: if s.boolVal == true: i.push 1.int.newVal else: i.push 0.int.newVal else: raiseInvalid("Cannot convert a quotation to an integer.") def.symbol("float") do (i: In): let s = i.pop if s.isString: i.push s.getString.parseFloat.newVal elif s.isNull: i.push 0.int.newVal elif s.isInt: i.push s.intVal.float.newVal elif s.isFloat: i.push s elif s.isBool: if s.boolVal == true: i.push 1.float.newVal else: i.push 0.float.newVal else: raiseInvalid("Cannot convert a quotation to float.") def.symbol("prompt") do (i: In): when defined(mini): i.push "$ ".newVal else: i.eval(""""[$1]\n$$ " (.) => %""") # Sigils def.sigil("'") do (i: In): let vals = i.expect("str") let s = vals[0] i.push(@[i.newSym(s.strVal)].newVal) def.sigil(":") do (i: In): i.pushSym("define") def.sigil("?") do (i: In): i.pushSym("help") def.sigil("@") do (i: In): i.pushSym("bind") def.sigil("*") do (i: In): i.pushSym("invoke") def.sigil(">") do (i: In): i.pushSym("save-symbol") def.sigil("<") do (i: In): i.pushSym("load-symbol") def.sigil("^") do (i: In): i.pushSym("lambda") def.sigil("~") do (i: In): i.pushSym("lambda-bind") # Shorthand symbol aliases def.symbol("=-=") do (i: In): i.pushSym("expect-empty-stack") def.symbol(":") do (i: In): i.pushSym("define") def.symbol("?") do (i: In): i.pushSym("help") def.symbol("@") do (i: In): i.pushSym("bind") def.symbol("^") do (i: In): i.pushSym("lambda") def.symbol("~") do (i: In): i.pushSym("lambda-bind") def.symbol("'") do (i: In): i.pushSym("quote") def.symbol("->") do (i: In): i.pushSym("dequote") def.symbol("::") do (i: In): i.pushSym("operator") def.symbol("=>") do (i: In): i.pushSym("apply") def.symbol("==>") do (i: In): discard # used within operator defs def.symbol("return") do (i: In): discard # used within operator defs def.symbol(">>") do (i: In): i.pushSym("prefix-dequote") def.symbol("><") do (i: In): i.pushSym("infix-dequote") def.finalize("ROOT") |